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Measurement and density functional calculations of optical constants of Ag and Au from infrared to vacuum ultraviolet wavelengths

Wolfgang S. M. Werner, Michael R. Went, Maarten Vos, Kathrin Glantschnig, and Claudia Ambrosch-Draxl
Phys. Rev. B 77, 161404(R) – Published 15 April 2008

Abstract

The dielectric function of Ag and Au for wavelengths ranging from the infrared to the vacuum ultraviolet regime was measured with reflection electron energy-loss spectroscopy (REELS). The spectra are compared to density functional theory (DFT) calculations and to experimental optical data available in the literature since about three decades ago. The REELS and DFT results exhibit good consistency, while the earlier optical data significantly deviate. The results demonstrate that REELS and DFT are powerful tools for the study of the electromagnetic response of surfaces.

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  • Received 17 January 2008

DOI:https://doi.org/10.1103/PhysRevB.77.161404

©2008 American Physical Society

Authors & Affiliations

Wolfgang S. M. Werner*

  • Institut für Allgemeine Physik, Vienna University of Technology, Wiedner Hauptstraße 8-10, A 1040 Vienna, Austria

Michael R. Went and Maarten Vos

  • Atomic and Molecular Physics Laboratories, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia

Kathrin Glantschnig

  • Institut für Physik, Fachbereich Theoretische Physik, University of Graz, Universitätsplatz 5, A 8010 Graz, Austria and University of Leoben, Franz-Josefstraße 18, A 8700, Austria

Claudia Ambrosch-Draxl

  • Lehrstuhl für Atomistic Modelling and Design of Materials, University of Leoben, Franz-Josefstraße 18, A 8700, Austria

  • *werner@iap.tuwien.ac.at

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Vol. 77, Iss. 16 — 15 April 2008

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